Improvement in pumps



m1 5am game Qtfir tt igw JOHN R. POMROY AND L. J. WALTER, OF LOCKPORT, NEW YORK.

Letters Patent No. 89,338, datedApril 27, 1869.

IMPROVEMENT IN PUMPS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom/it may concern.-

Be it known that we, JOHN R. PQMROY and L. J. WALTER, of Lockport, in the county of Niagara, and State of New York, have invented a certain new and useful Improvement in Double-Acting Force-Pumps; and we do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, making a part of this specification, in which Figure 1 is a central vertical section, and

Figure 2, a cross-section of the air-chamber, in. line x :0, fig. 1.

Like letters of reference indicate corresponding parts in both figures.

Our invention consists in locating in the mouth of the air-chamber a central partition and an open-topped tube, for the purpose of separating the currents of the opposing valves, and carrying the water up over the eduction-outlet, so that it will 'reach the same in an unbroken body, and pass oft" without obstruction.

The drawings indicate an ordinary double-acting force-pump, a a being the induction, and a, a the eduction-valves, arranged in the usual manner.

In the mouth'of the air-chamber A is situated an open-topped tube, b, of-such height as to reach above the eduction-outlet'c, (shown in dotted lines,) thereby carrying the water first up above the outlet, and then allowing it to flow down outside the tube in a body, as indicated by the arrows.

A partition, (I, secured to the floor f, extends centrally up across the water-space 9, between the eduction-valves, and a suitable distance into the tube b, as clearly shown in fig. 1..

This arrangement of the partition and tubes in the mouth of the air-chamber serves an important purpose. The partition serves to divide the water passing, and prevents the current through one valve from interfering with and impeding that through the other, and the tube serves as a brakewater or shield to the eductiou-passage, by carrying the water above the same, then allowing it to settle, in a still unbroken body, in the annular space at the bottom, in the best condition to be discharged.

The current passing upward through the tube can never disturb the eductiou-outlet by its impetus, and the pressure of the air downward in the annular space thus formed acts upon a still body of water.

WVe do not claim the general construction and arrangement of the pump.

What we claim as our invention, and desire to secure by Letters Patent, is

The arrangement, relatively to the air-chamber A, of the valves a a, the tube b, the eduction-outlet c, the partition (I, and floor f, when the parts are adapted to operate together as described.

In witness whereof, we have hereunto signed our names, in the presence of two subscribing witnesses;

JOHN R. POMROY.

Witnesses: v L. J. WALTER.

W. J. CHAMBERLAIN, H. L. PENFIELD, EVERETT EABLE. 

